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Add full documentation for the Denon MC3000 mapping
Replaces a stub page (just a product link and a note that a detailed description was missing) with full docs: compatibility, audio interface setup, Preferences-configurable mapping settings, and every control across the mixer, deck, hot cue, loop, FX, sampler, and library sections, plus Known Issues for what isn't mapped. See mixxxdj/mixxx#16733.
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‎source/hardware/controllers/denon_mc3000.md‎

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# Denon MC3000
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- [Manufacturer’s product page](https://web.archive.org/web/20140713040211if_/https://www.denondj.com/products/view/mc3000) (archived)
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The Denon MC3000 is a 4-channel, 4-deck DJ controller and mixer with a
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built-in USB audio interface. It has two physical deck sections (jog wheel,
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transport, hot cues, loop controls) and a 4-channel mixer, but only two FX
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units and eight sampler pads shared across all four decks. The manual
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describes this as a "deck layer function that can control four decks
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separately": the left deck section can be switched between controlling deck
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A or deck C with the {hwlabel}`DECK CHG.` buttons, and the right deck
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section between deck B or deck D.
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If you'd like to see something changed or extended in this mapping,
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please share feedback in the
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[forum thread](https://mixxx.discourse.group/t/denon-mc3000-midi-script/12283).
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:::{versionadded} 2.0
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:::
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:::{versionchanged} 2.6
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Added full 4-deck (A/B/C/D) support, current EffectRack/beatloop/
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QuickEffect controls, and LED feedback for all four decks.
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:::
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## Useful links
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- [Manufacturer's product page](https://web.archive.org/web/20140713040211if_/https://www.denondj.com/products/view/mc3000) (archived, product discontinued)
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- [Forum thread](https://mixxx.discourse.group/t/denon-mc3000-midi-script/12283)
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- [Owner's manual (PDF)](https://cdn.inmusicbrands.com/denondj/legacy/mc3000/MC3000EM_ENG_IM_v00.pdf)
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- [Quick setup guide (PDF)](https://cdn.inmusicbrands.com/denondj/legacy/mc3000/MC3000EM_Quick_Setup_Guide.pdf)
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- [Windows driver v1.0.0, 2015](<https://cdn.inmusicbrands.com/denondj/legacy/mc3000/Denon_DJ_MC3000_Driver_v1.0.0(2015).zip>)
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## Compatibility
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- **macOS**: no driver installation is required. The official quick setup
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guide's only macOS step is configuring the device in Audio MIDI Setup,
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with no driver install step at all, consistent with class-compliant USB
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audio.
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- **Windows**: requires the official ASIO driver, linked above (also
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originally shipped on the controller's Resource CD-ROM). After
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installing, check that MC3000 has a checkmark in the ASIO driver control
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panel and is enabled. The driver is old (2015) and not verified against
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recent Windows versions - if it fails to install, Windows' generic USB
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audio class driver may still work for basic use.
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- **Linux**: not explicitly documented by the manufacturer; expected to
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work with the kernel's built-in ALSA USB audio driver as a
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class-compliant device, but not verified.
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## Audio Interface Setup
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The MC3000's built-in USB audio interface is documented (official quick
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setup guide) as:
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- Channels 1-2 = Master output.
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- Channels 3-4 = Headphone output.
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Configure these in Mixxx's Sound Hardware preferences accordingly. The
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single 1/4" microphone input and the LINE 1/2 inputs are analog mixer
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inputs only - not available to Mixxx as audio devices.
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862
:::{note}
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Unfortunately a detailed description of this controller mapping is still missing.
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If you own this controller, please consider
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[contributing one](https://github.com/mixxxdj/mixxx/wiki/Contributing-Mappings#user-content-documenting-the-mapping).
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{hwlabel}`MASTER LEVEL`, {hwlabel}`MIC LEVEL`, {hwlabel}`MONITOR PAN`,
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{hwlabel}`MONITOR PHONES`, and {hwlabel}`LINE TO MASTER` are fully analog
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on this hardware and are not sent over MIDI at all, so adjusting them
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changes nothing on screen in Mixxx.
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:::
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## Mapping Settings
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The mapping features a number of options that can be customized from
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{guilabel}`Preferences` > {guilabel}`Controllers`, after selecting your
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controller and the Denon MC3000 mapping:
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- **Jog wheel sensitivity** sets the jog wheel's pitch-bend sensitivity
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for turning without an active touch-scratch - that is, whenever
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{hwlabel}`VINYL MODE` is off, or the wheel isn't currently touched
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(default: `2.0`). Higher values reduce sensitivity.
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- **Scratch sensitivity** sets the jog wheel's scratch sensitivity
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while actively touch-scratching with {hwlabel}`VINYL MODE` on
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(default: `1.0`). Higher values reduce sensitivity.
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- **VINYL MODE on by default** sets whether {hwlabel}`VINYL MODE` is
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enabled by default at startup, for all four decks (default: off).
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## Mixer Section
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| Control | Function |
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| --- | --- |
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| Channel fader, Cross fader | Standard volume and crossfader control. |
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| {hwlabel}`LEVEL` | Channel pregain/trim. |
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| {hwlabel}`FILTER` | QuickEffect filter. |
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| {hwlabel}`HI` / {hwlabel}`MID` / {hwlabel}`LOW` | 3-band channel EQ. |
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| {hwlabel}`CUE DECK A` / {hwlabel}`CUE DECK B` / {hwlabel}`CUE DECK C` / {hwlabel}`CUE DECK D` | Headphone cue (PFL) toggle, one button per deck letter. |
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| {hwlabel}`KEY LOCK` | Toggles keylock for the deck. |
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| {hwlabel}`SYNC` | Beat-syncs the deck. Hold past a short delay to enable continuous sync lock instead of a one-time sync. The LED lights while sync is active. |
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| {hwlabel}`SHIFT` + {hwlabel}`SYNC` | Toggles quantize for the deck. |
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:::{hint}
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{hwlabel}`LEVEL`, {hwlabel}`FILTER`, {hwlabel}`HI`, {hwlabel}`MID`,
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{hwlabel}`LOW`, and the pitch fader (see Deck Section below) use
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soft-takeover: turning the physical control has no effect until it
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reaches the value Mixxx is currently using, so there's no jump.
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:::
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## Deck Section
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| Control | Function |
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| --- | --- |
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| {hwlabel}`PLAY` | Standard play/pause. |
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| {hwlabel}`CUE` | Standard cue-point behavior. |
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| Jog wheel (touch + turn) | Scratches when touched with {hwlabel}`VINYL MODE` on; otherwise bends pitch while turning. |
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| {hwlabel}`VINYL MODE` | Toggles scratch (vinyl) mode for the deck. Off by default at startup for all four decks; see Mapping Settings above to change the default. |
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| Pitch fader | Adjusts the deck's playback rate. |
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| {hwlabel}`PITCH BEND -` / {hwlabel}`PITCH BEND +` | Temporary pitch bend while playing. |
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| {hwlabel}`SHIFT` + {hwlabel}`PITCH BEND -` / {hwlabel}`SHIFT` + {hwlabel}`PITCH BEND +` | While paused, jumps to the track start/end instead of bending pitch. |
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| {hwlabel}`SHIFT` | Modifier used by several controls throughout this mapping. |
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| {hwlabel}`DECK CHG.` (A/B/C/D) | Switches the left (A/C) or right (B/D) deck layer for the jog wheel, hot cues, loop controls, EFX and other per-deck controls. {hwlabel}`LOAD A` / {hwlabel}`LOAD B` are the one exception - see the Library Section below. |
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:::{hint}
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Jog wheel and scratch sensitivity can be tuned to taste; see Mapping
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Settings above.
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:::
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## Hot Cue Section
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| Control | Function |
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| --- | --- |
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| {hwlabel}`CUE1` - {hwlabel}`CUE4`, {hwlabel}`CUE5` - {hwlabel}`CUE8` (with {hwlabel}`CUE5-8 MODE`) | Sets/jumps to a hot cue point. |
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| {hwlabel}`SHIFT` + hot cue button | Clears the hot cue instead. |
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## Loop Section
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| Control | Function |
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| --- | --- |
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| {hwlabel}`AUTO LOOP` | Engages/releases a beat-synced loop at the current position. |
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| {hwlabel}`SHIFT` + {hwlabel}`AUTO LOOP` | Deletes the current loop points instead of engaging a loop. |
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| {hwlabel}`LOOP IN` / {hwlabel}`LOOP OUT` | Manually sets the loop start/end point. |
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| {hwlabel}`LOOP CUT -` / {hwlabel}`LOOP CUT +` | Halves or doubles the active (or next) loop's length. |
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## FX Section
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| Control | Function |
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| --- | --- |
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| {hwlabel}`EFX.1` - {hwlabel}`EFX.3` buttons | Toggles the corresponding effect slot on/off in the side's assigned effect unit (left = Unit 1, right = Unit 2). |
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| {hwlabel}`EFX.1` - {hwlabel}`EFX.3` knobs | Adjusts that effect's meta knob parameter. |
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| {hwlabel}`EFX.4` button | Hold, then press {hwlabel}`EFX.1` - {hwlabel}`EFX.3` to focus one effect for individual parameter control -- while focused, those buttons/knobs control that effect's own parameters instead of the enable toggle/meta knob. A short press shows/hides the focused effect's parameters. |
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| {hwlabel}`EFX.4` knob | Adjusts the assigned effect unit's overall dry/wet mix. |
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| {hwlabel}`FX ON 1` / {hwlabel}`FX ON 2` | Assigns effect Unit 1 or Unit 2 to whichever deck is currently active on that side. |
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| {hwlabel}`EFX` | Shows/hides the effect rack. |
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## Sampler Section
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:::{note}
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Per the official manual, the four {hwlabel}`EFX.1` - {hwlabel}`EFX.4`
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knob/button pairs above are dual-purpose, switched entirely in hardware
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by the {hwlabel}`SAMP.` button: "OFF: Switches to the effect mode. EFX.
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1-4 are used to operate the effects. ON: Switches to the sample deck
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mode. EFX. 1-4 are used to operate the sample deck." There is no
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separate physical SAMP 1-4 control - it is the same EFX.1-4
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buttons/knobs, relabeled in hardware.
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:::
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| Control | Function |
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| --- | --- |
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| {hwlabel}`EFX.1` - {hwlabel}`EFX.4` as SAMP 1-4 buttons (while {hwlabel}`SAMP.` is on) | If a track is loaded, plays it from its cue point. If the slot is empty, loads the currently-selected library track into it. |
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| {hwlabel}`SHIFT` + SAMP button | Stops the sampler if playing, or ejects the loaded track if stopped. |
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| {hwlabel}`EFX.1` - {hwlabel}`EFX.4` as SAMP 1-4 knobs (while {hwlabel}`SAMP.` is on) | Adjusts the sampler's gain. |
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| {hwlabel}`SAMPLE` | Shows/hides the sampler section. |
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The SAMP pad LEDs light solid when a sampler is loaded and blink while it's
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playing.
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## Library Section
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| Control | Function |
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| --- | --- |
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| Track select knob ({hwlabel}`SEL.`) | Browses the track library. |
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| Track select knob push ({hwlabel}`SW`) | Loads the highlighted track into the first stopped deck. |
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| {hwlabel}`FWD` / {hwlabel}`BCK` | Selects the next/previous playlist or crate. |
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| {hwlabel}`LOAD A` | Loads the selected track to deck A. |
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| {hwlabel}`SHIFT` + {hwlabel}`LOAD A` | Loads the selected track to deck C instead. |
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| {hwlabel}`LOAD B` | Loads the selected track to deck B. |
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| {hwlabel}`SHIFT` + {hwlabel}`LOAD B` | Loads the selected track to deck D instead. |
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| {hwlabel}`BROWSE` | Toggles the maximized library view. |
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| {hwlabel}`RECORD` | Starts/stops recording the mix. |
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## Known Issues
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- {hwlabel}`CF MODE` is not mapped: its stock function, toggling the
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crossfader between audio and video assignment, has no Mixxx equivalent.
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- {hwlabel}`DUCKING` is not mapped to anything.
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- {hwlabel}`MASTER LEVEL`, {hwlabel}`MIC LEVEL`, {hwlabel}`MONITOR PAN`,
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{hwlabel}`MONITOR PHONES`, and {hwlabel}`LINE TO MASTER` are fully analog
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hardware controls, invisible to MIDI.

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